Internal-combustion engine.



F.. W. SPAKE/Il T. BROWNLEB 51 W. SPAUKE. INTERNAL COMBUSTION ENGINE. v

APPLICATION FILED M1111, 1912.

1,108,265. 1 1 Patented A111125, 1914u 2 SHEETS-SHEET l.

@Mfw/ f v mw 9% dem iM/raw F. W SPAOKE, D. T. BROWNLEE @L W. SPAGKE. INTERNAL COMBUSTION ENGINE.

APPLICATION FILED DBU. 11, 1912 Patented Aug. 25, 19M,

2 SHEETS-SHEET 2.

@Hom 1;: u

' pending` application,

y l l AND lVILLIAM SCKE, l INDIANAPGLIS,

COMPANY, UF INDIANAP- INTERNAL-CQMBSTION ENGNE.

Specification of Letters Patent.

lla'l elated itung. 2li, lll lV-l..

Original application tiled September 3, 1911,. Serial No. 643,377. Divided and this application filed Decem- TO (all 1li/0m 'it may concern lle itknown that we, Flinn l/ll. Smoke,

DALMART. Bieownnnn, and llViLLrAiit Simons, citizens of the vUnited States,l residing at lndianap-olis, in the county of Marion and itate of indiana7 have invented a new and useful internal Coubustion Engine, of which the following is a specification. t

lt is the object of our invention to simplify and elieapeii,'and at the saine time to avoid certain 'disadvantages common in the construction of internal combustion motors, especially motor cycle motors.

To this end our invention involves a nuin` her of novel features which will lhe apparent from the description and drawings and will be particularly pointed out in the claims.

rllhis application is a division of our col Serial No. 648,377, tiled September 8, 1911. t

lln the drawings, Figure 1 is an elevation of a motorcycle motor involving our invention; 2 is a section substantially on the line Q--Q o f Fignl and Fig. 3 is an enlarged detail view ofthe adjusting device for` the valve cams.

The cylinder 10 and valve chamber 11 are preferably made integral and provided With the usual 'radiation ribs 12. Within the cylinder 10 and valve chamber llore the usualv piston 13 and valves 14 and 15. Bolted to' the lower or open end of the cylinder 10 is a crank case 16, which extends entirely7 across' the `end of the cylinder 10 and carries one bearing 17 for then crank shaft 18. rllhe other bearing 19 for the crank shaft is carried by the cap 20, which is bolted to the crank case 1G. The bearings 17 and 19 are preferably ball bearings. The crank case is usually filled with oil about to the level of the oil hole 20 in the cap 20. The joint between the cylinder 10 and crank case 16 extending;

entirely across the endof the cylinder, and

the joint between the cap 520 and the crank :ase being at one side, such two joints do not j intersect; asta result, the oil leakage ahnost inevitably present where there are intersectinp; joints is avoided.

yllhe crank shaft, denoted in its entirety as 13, is an integral structure, and comprises two parallel coaxial disks 21 and joined by an eccentric hollow shaft or crank pin 23 and nro ided with shaft sections 2t berll, 1912. 'Serial No. 736,080.

and 25 projecting from their remote faces. These shaft sections 2st and 'lit within the bearings 17 and 19, respectively. livo fly-wheels 2G and 27 have disk-shaped depressions which ht over the disks 31 and E22. rthe ily-wheels and disks are locked against relative rotation movement bv dowel disks 28 fitting in registering` eccentric circular depressions in the adjacent similia-es of the disks 21and 22 and the {ly-wheels 2G and 27; andthe ily-wheels, disks, and bearings are locked against relative axial. movement by a single nut 29 on the shaft sections 25 and a. single nut 30 bearing against the pulley 31 on the shaft section 24:. This pulley may be provided with oil slingers 32 for preventing oil from the bear .ing 17 from getting on the belt.

` On the hollow eccentricslnlft 23 is mounti ed one end of a pitman 33, the other end of which is suitably pivoted to the piston 13. The pitlnan works in the space be tween the krims of the iiy-wheels 2G and To balance the eccentric shaftl 23 Vand the pitinan 33, the rimsv of the ilywheels are preferably niadeheavier on the side opposite said eccentric shaft.

Mounted at an angle, preferably a right angle, to the crank shaft 18, is a countershaft 3S carrying cams 3f) for operatingthe valves 14 and 15 through suitable valve lifters 40' and 'valve rods 41, the latter being mounted in integral projections 1 on the cap 20. 'This countershaft 38 driven by suitable gears 42 and 43 on the shaft section l5 and the countershaft respectively. The valve lifter i0 for the exhaust vvalve may be manually operated by a compression release handle 40a. In order conveniently to get the proper relative adjustment of the movements 'ot the valvesi'i and land the piston 13, one face of the f has one or more teeth or projections -1l7` iwhich lit into corresponding slots in said shoulder. rllo adjust the position ol' the cams 39 and the operation of the valves 11 and 15, the nut 48 .for holding the gear 42 in place is loosened sufficiently to disengage the teeth 44 and 45, the gear 42 is then `turned to biing the cams and valves into proper position for the then position of the piston 13, and the nut 48 is tightened to cause the .teeth 44' and 45 to engage. This furnishes a 4simple and convenient adjust-- mentr, The numbers of gear teeth and teeth 44 on the gear 42 are preferably relatively fprime, as thereby the number of adjustnients obtainable is equal to the product of y, such'numbers'of teeth. 'The washer ,46' is made separate from the shaft section 25 beare held in place byscrews 38D.

of the shaft 38 remote from the gear 43 is cause thereby the teeth-45 may be formed, and, 'if necessary, l'iarden'ed, both. incre easily 'and more accurately.

`The cam-bearing shaft 38 is mounted in "bearings .38a vwithin a Vtransversel chamber.

49 integral with the cap 20, The bearings On the end a gear 50, which. meshes with a gear 51 on the shaft 52 of a magneto electricniachinel 53, provided for ignition purposes;- By renioving the cap 54 at/the end of the chamber 49 and loosening the screws 38", the shaft .38, its bearings 38a, and the parts 'carried the shaft maybe slipped outendwise.

For timing the magneto, the gear 50 is made v'like the gear 42vand interlocks with afwasher 55 similar to the washer 46. Ac-

' ee'ssto the gears- 42 and 50'is permitted by Then, with the .xfcnneCted to the piston,

y'is bolted to the'end of the cylinder 10.

lthe capsv 56 and 54. A

The process of assembling is as' folloWs:- The fly-wheel 26 is mounted on the disk 21 and the crankshaft 18'put in placen the 17. The. pulley 21 -may now be and the disk, ffy-Wheel, bearing, and all fastened together by the nut 30. piston 13 in place in the' cylinder v10 and the pitman 33 properly the crank case 16 pulley The free end of the pitman 33 is now properly 'clamped to the eccentric yshaft 23, and the other fly-wheel 27 is put inplace on the disk 22. Then thebearing 19`is put on ythe vcrank shaftand fastened in place by the nut. 29; then the washer 46,' gear 42, and nut'l 48 are put 0n,.but the is preferably left loose. In the meanwhile, the parts-carried by the cap 20, thatvis, 'the @ountershaft k38 and its bearings, the avalve lifters 40, the valve'rods 41, and the magnet-o 53 and its shaft 52,arepreferably mounted in the cap 2(); but the caps 54 and 56 are left off. -Thenthe cap 20, with its parts mount- `ed thereon, is put in place and bolted, the

loosened vnut 48 allowing the easy meshing of the gears 42 and 43. Then the gear'42 is adjusted, the nuti 48 tightened, and the. cap 56 puton. Finally the gear 50 is similarly adjusted and the cap 54 put in place. f ",Our invention is capable of wide modification,'especially inlits details. We therefore aim to cover all modifications which do not involve a departure from the spirit a'nd scope of our invention as set rforth in the following'claims. y

-We claim as our invention;

crank case, a cap for said crank. case having an integral shaft chamber, a shaft mounte v 1. In an internal combustion engine,` the combination with a cylinder, piston, crank shaft, engine valves, and magneto, of a in said shaftfchamber and driving said `our hands and seals at Indianapolis, Indiana, this seventh day of December, A. D. one thousand nine hundred and twelve.

FRED WV. SPACKE. L. s. DALMAR T. BROVNLEE. [Ls] WILLIAM SPACKE. [Ls] Witnesses: j

' MAY LAYDEN,

G. B.' SCHUH.

magneto and operating said. valves, 

